TEL (Telephone Electronics Line) (Vol. 2 No. 4)
TEL (Telephone Electronics Line) was a small publication that was dedicated to phone phreaking and hacking. It began publishing in November 1974. TEL was similar to TAP newsletter but was geared totally toward phone phreaking. In 1975, Pacific Telephone & Telegraph won a lawsuit against the publishers of TEL. The Superior Court of California, County L.A. court ordered TEL to stop publishing immediately. A letter was mailed to all subscribers advising them to destroy all back issues of TEL. TEL ceased publishing after only 7 issues.
TEL Magazine Volume 2, Issue 4 (April 1975). Touch-Tone - What it is, What it does!, Construction Project - Add Four New Tones to Your Touch-Tone Phone., Central Office Operations - Part One, Step-by-Step, Anatomy of a Phone Bust - or, "How to Get Caught", Dial Tone Speed Measurement - Part Three, Construction Project - Television Remote Control, PUC vs. Telco - California Ruling on Interconnection.